[lt4camaro]

Originally Posted by laynlo15

I ran 11.78@116 w/1.78 60ft DA was 2180 and 76 degrees I think I was off the throttle before the mph trap. Second pass was 11.79@121.31 w/1.75 60ft, DA was 2815 and Temp was 86 degrees.I agree with King on the limits of the A10, its nothing like my A8 was in my 16 Magnuson SS. I also think the converter is a little tighter then the A8. Really had the A8 dialed in on the C7, we dialed in the trans for the last outing in October but there were so many street cars there dragging water to the line we just never could hook the car in 50 degree temps. We had it set up to go 10.80 with the trans dialed in or maybe even a 10.70 since we went almost 130 mph on one of the 2 passes. Last pass couldn't even make a full pass so wasted fuel and time. Glad I didn't break anything but then I sold it in December. Maybe should have kept it. This Lt1 is pretty lazy feeling but just needs some more track tuning and I didn't even log yesterday but maybe I should have.

Great passes for sure, Your doing a fantastic job IMO . I on the other hand have no hands on tuning experience at all with these late model cars.

[KingLT1]

There is a torque limit vs gear table that the TCM references to limit throttle until X rpm. So you can mat the peddle to the floor and the Throttle is not going to open all the way. It slowly opens from 50-70% on the hit then gradually opens all the way by 6k rpm. As you add mods and increase power it only makes it worse until you can edit this table.

On my brother's A10 ZL1 the TCM was limiting the throttle to 56% on the hit from any gear between 1-4. The TCM file is almost identical between 10l90 and 80.

[laynlo15]

I'm must not sure how much I'm racing this year so don't know if its worth buying that new TCM although we sure made a big change last year with my A8 that really made a difference. I don't know if HP tuners is able to unlock or if I'd still have to order from Houston Speed.

[6spdhyperblue]

I can echo the lazy feel. If the throttle is open all the way in the scanner, would that confirm the tcm is not limiting?

I just got the wideband in on my car on Saturday and the fueling is almost finished.
Next weekend I will do the same in the a10. Then it’s game on and taking a trip to the strip. Would be happy with those times

[JSH]

Originally Posted by laynlo15

I don't know if HP tuners is able to unlock or if I'd still have to order from Houston Speed.

HPT cannot unlock. I bought my T87a TCM from HHP, which I believe is the sole source. Mine has various 2nd gear launch tunes, but 1st gear launch is much faster.

[lt4camaro]

Originally Posted by laynlo15

I'm must not sure how much I'm racing this year so don't know if its worth buying that new TCM although we sure made a big change last year with my A8 that really made a difference. I don't know if HP tuners is able to unlock or if I'd still have to order from Houston Speed.

From what I have learned you need the HPV12 tuner to tune the moded T87A tcm thats needed for us 20-23 A10 people from Houston House of speed

[cjperformance]

Originally Posted by KingLT1

There is a torque limit vs gear table that the TCM references to limit throttle until X rpm. So you can mat the peddle to the floor and the Throttle is not going to open all the way. It slowly opens from 50-70% on the hit then gradually opens all the way by 6k rpm. As you add mods and increase power it only makes it worse until you can edit this table.

On my brother's A10 ZL1 the TCM was limiting the throttle to 56% on the hit from any gear between 1-4. The TCM file is almost identical between 10l90 and 80.

Does that work the same on the A8? That table was increased on mine with the trans tune, but i havent been able to get to the track to see the difference. I had the converter put in too... so i guess that wouldnt really yield any useful metrics on what it does to 60ft for this conversation.

[KingLT1]

Originally Posted by cjperformance

Does that work the same on the A8? That table was increased on mine with the trans tune, but i havent been able to get to the track to see the difference. I had the converter put in too... so i guess that wouldnt really yield any useful metrics on what it does to 60ft for this conversation.

Yes yours is maxed out so there is no torque limiting in play.

[KingLT1]

Originally Posted by 6spdhyperblue

I can echo the lazy feel. If the throttle is open all the way in the scanner, would that confirm the tcm is not limiting?

I just got the wideband in on my car on Saturday and the fueling is almost finished.
Next weekend I will do the same in the a10. Then it’s game on and taking a trip to the strip. Would be happy with those times

Usually The throttle still opens all the way just not as soon as you command it. It's delayed hence the lazy feel.

[laynlo15]

Here are my tme slips of my quickest passes. The others I won't post since they are slower when I was trying to win my class in True Street and obviously not full passes to hit the 12.00 index. I was also able to tuck the Nitto 555 R2 305-35-20s under my lowered Lt1. They are about 1/2 taller than the stock so that would have hurt the times down low. I did go in and change the tire diameter to 27.8 on the advice of King as he has the same tire on his car. Obviously, I was car 128

Temps on this run were 76.1 degrees and DA was 2280

Temps on this run were 86.4 degrees and DA was 2916

[6spdhyperblue]

Originally Posted by laynlo15

Here are my tme slips of my quickest passes. The others I won't post since they are slower when I was trying to win my class in True Street and obviously not full passes to hit the 12.00 index. I was also able to tuck the Nitto 555 R2 305-35-20s under my lowered Lt1. They are about 1/2 taller than the stock so that would have hurt the times down low. I did go in and change the tire diameter to 27.8 on the advice of King as he has the same tire on his car. Obviously, I was car 128

Nice!

Did you add timing to the top three rows of the min spark tables?

[lt4camaro]

Originally Posted by laynlo15

Here are my tme slips of my quickest passes. The others I won't post since they are slower when I was trying to win my class in True Street and obviously not full passes to hit the 12.00 index. I was also able to tuck the Nitto 555 R2 305-35-20s under my lowered Lt1. They are about 1/2 taller than the stock so that would have hurt the times down low. I did go in and change the tire diameter to 27.8 on the advice of King as he has the same tire on his car. Obviously, I was car 128

Attachment 1099404 Temps on this run were 76.1 degrees and DA was 2280

Attachment 1099405 Temps on this run were 86.4 degrees and DA was 2916

Attachment 1099406

Nice Passes.....Stock tire on the LT1 rear is 27.7 versus 28.4, no trouble with the tire coming close to the left rear wheel liner? and yes the .7 inches taller tire should take some of the dig out of the car.

[lt4camaro]

What are your thoughts on the big MPH differences? The car should have did less MPH on the 86 degree run and Because your 1st two passes were so close everywhere on both time slips with a 5mph trap speed difference. Just seems odd, maybe because the runs were in different lanes and one of the MPH calculators was not calculating correctly?? Great passes and a great job prepping and driving for sure.

[wnta1ss]

Originally Posted by laynlo15

Here are my tme slips of my quickest passes. The others I won't post since they are slower when I was trying to win my class in True Street and obviously not full passes to hit the 12.00 index. I was also able to tuck the Nitto 555 R2 305-35-20s under my lowered Lt1. They are about 1/2 taller than the stock so that would have hurt the times down low. I did go in and change the tire diameter to 27.8 on the advice of King as he has the same tire on his car. Obviously, I was car 128

Did you log your runs? I am curious how the locked A10 was shifting with tall tires on it. My 2017 A8 car, when it was still locked, short-shifted the 1>2 by quite a bit with the 305/45-17 tires like ltcamaro is using on his car.